How Long Can a Cockroach Live Without Its Head?

Cockroaches are insects of the order Blattodea, which also includes termites.


Even for main cataclysms like dropping a head, cockroaches don’t bleed very a whole lot. Unlike humans, they have an open circulatory system: A device for distributing blood thru their bodies that doesn’t depend on a closed network of arteries and veins. Their blood doesn’t pump below stress like ours, but just kind of sloshes around, making its manner into the cockroach’s tissues.

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The super thing about this system, in case you’re someday going to be headless is that once a chief wound happens, blood doesn’t unexpectedly get pressured out. For a cockroach that loses its head, the blood simply clots on the neck. The cockroach could have a nasty scab for sure (in which its head was), but it won’t die from lack of blood.

Unlike people, cockroaches don’t breath via a nose or their mouth. Instead they breathe through small holes of their bodies called spiracles that don’t need a mind to direct them. No nostril, no mouth, and no need for a mind to adjust your respiratory means that you can breathe all you want to without a head.

How Long Can a Cockroach Live Without Its Head?

But it is going to die from being unable to eat. And properly before that, it’s going to die from thirst. A headless cockroach has no mouth to drink with and could be useless from dehydration in less than a week. Which brings the total day be counted from the moment it loses its head to the moment it loses its existence to somewhere round 7 days or much less.

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